14) According to the asset approach to exchange rate determination, if investors become optimistic about the dollar's future value, does the dollar appreciate or depreciate? 15) According to the asset approach to exchange rate determination, if a foreign central bank engages in expansionary monetary policy, should the dollar appreciate or depreciate against that currency? PART 2: PROBLEMS (55 Points) 1) The following table contains exchange rate data for five countries: Country Bio Mac Actual Big Mac Implied Over/unden